Wilson Ripspin is crisp and durable co-poly made for the big hitter who wants maximum control and phenomenal spin. This string's coating is treated with a special low-friction additive to promote the needed "snapback" for heavy spin. With it's extremely precise and predictable response, we think Ripspin will give hard hitting baseliners the confidence to swing big and play aggressive tennis. In addition to creating increased ball rotation and more explosive spin, Ripspin's low-friction coating will help topspin players get extended string life from an open string pattern.